Non-executable mappings now in NetBSD too

Tim Kientzle kientzle at
Sat Aug 30 13:44:59 PDT 2003

Pedro F. Giffuni wrote:
> Just for reference, I found links to these interesting postings on NetBSD and
> OpenBSD respectively:
> Last time I asked, I learned our signal trampoline had been impleneted on
> userland like on NetBSD's IRIX emulation (not sure about all platforms though),
> so work on this would be really good.

The OpenBSD work on tightening up read/write/exec memory permissions
looks interesting, but I wonder what impact it has on
JIT technologies; do the current Java VMs or other incremental
compilation engines require write+exec?


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